One Engineer.Every layer ofthe software journey.
Mobile application engineering, Clean Architecture, and cloud data pipelines unified under one accountable developer. Zero handoff friction, zero excuses.
About Me
I am a Flutter Developer focused on building production-ready mobile applications for iOS and Android. I work comfortably with Clean Architecture, Repository Pattern, UseCase, Dependency Injection, BLoC/Cubit, RESTful APIs, Firebase, local databases, and mobile release workflows.
I build applications.I own the outcome.
// SPECIALIZING IN FLUTTER, CLEAN ARCHITECTURE & PRODUCTION RELEASE LIFECYCLE
Live Coding & Device Test Inspector
Simulating the engineering lifecycle: real-time code typing dynamically renders mobile UI, while the test tab pairs terminal pipeline execution with automated device UI inspection.
Everything your app needs.Under one engineer.
From responsive Flutter mobile UI to robust Dio interceptors, offline-first databases to Apple App Store & Google Play delivery, I bring specialized mastery to every discipline.
Mobile App Development
High-performance Flutter applications with native feel, smooth 60 FPS transitions, custom Canvas widgets, and Cupertino/Material adaptability.
Clean Architecture
Strict separation of Domain, Data, and Presentation. Unidirectional data flow with BLoC/Cubit, UseCases, Repository Pattern, and Injectable DI.
Networking & Security
Resilient HTTP layers with Dio Interceptors, automatic token refresh, request queue/replay on 401, error handling, and OAuth/Cognito WebView authentication.
Offline-First Storage
Blazing-fast local caching and secure storage with Isar, ObjectBox, SQLite, and Flutter Secure Storage for sensitive credentials.
Pixel-Perfect UI Motion
Translating intricate Figma designs into responsive layouts with micro-interactions, Lottie animations, interactive charts (fl_chart), and custom painters.
Store Delivery & CI/CD
End-to-end deployment workflows with FVM, flavor configurations (Dev, Staging, Prod), code obfuscation, App Store Small Business Program, and client handover.
Work Experience
Hands-on journey building production cross-platform mobile apps from architecture and performance tuning to release and handover.
Mobile Developer / Flutter Developer
Key Responsibilities & Highlights
- Build production Flutter applications for iOS and Android, spanning system architecture, Clean Architecture layering, BLoC/Cubit state management, and final client delivery.
- Directly write production code and solve complex technical problems; leverage AI tools (Codex, Claude, ChatGPT, GitHub Copilot) for requirement analysis, debugging, and edge-case review with independent manual verification of code quality, security, and product behavior.
Safety Document Management App
Team: 3Flutter DeveloperMobile app for digitizing and processing safety/labor documents used by employees inside a company.
- Built the complete company document workflow: secure authentication, task/notification list, camera document scan/capture, multipart upload, backend analysis review, and user data confirmation.
- Solved the main system challenge around a custom document scanner, including guided capture UX, image preview/validation, upload reliability, and smooth confirmation for internal users.
- Focused on secure authentication (OAuth/Cognito), session handling, reliable API communication with Dio Interceptor token refresh, retry, and queued request replay.
Health App
Team: 3Flutter DeveloperHealth management app for clinic and B2B environments to review examination records and monitor personal health indicators.
- Delivered health management solutions for clinic and internal B2B operations, enabling stable monitoring of medical records, daily health indicators, trend charts, and body map.
- Owned end-to-end delivery from project setup and architecture design to implementation, testing, deployment, and client handover; worked directly with the client to clarify requirements and resolve technical risks.
- Engineered app using Clean Architecture, BLoC/Cubit, dependency injection (GetIt/Injectable), Dio/Retrofit, AutoRoute, Freezed; optimized UI/UX with Shimmer loading and informative feedback states.
Flutter Developer
Developed the Farmext aquaculture platform for iOS and Android; owned the Eshop and News/Community modules, directly delivered Warehouse/Cost Management, and co-owned Laboratory Management.
Farmext
Team: 10Flutter DeveloperCross-platform aquaculture management platform combining pond farming diaries, remote IoT automation, inventory/costs, e-commerce, and laboratory services (15,000+ users, 1,000+ DAU).
- Owned Eshop and News/Community modules, directly delivered Warehouse/Cost Management, and co-owned Laboratory Management for an aquaculture platform serving 15,000+ users (1,000+ DAU).
- Built the end-to-end multi-shop Eshop journey: product discovery/filtering, cart, vouchers, VietQR payment, order tracking, and hatchery products linked with laboratory test results.
- Digitalized smart farm operations: daily pond diaries (feed, medicines, water metrics pH/temp/alkalinity), remote IoT device control (aerators, smart feeders, sensors), and warehouse inventory tracking.
- Developed paginated News/Community feed with pull-to-refresh, rich media, and real-time weather; co-developed Lab workflows for water quality, PCR, and pathogen test reports.
- Applied feature-first Clean Architecture with BLoC/Cubit, GetIt, REST APIs, Firebase, and SQLite caching to ensure reliable data persistence, resilient UI states, and offline-first pond operations.
Freelance Mobile Developer
Key Responsibilities & Highlights
- Engaged directly with clients to analyze business requirements, advise technical architecture, and estimate project delivery timelines.
- Designed clean application structures, crafted responsive mobile UIs, and integrated secure backend RESTful APIs.
- Maintained high product reliability, handled network and data security edge cases, and provided post-handover support.
Flutter Developer Intern
Developed mobile features for E-sale Manager, an enterprise retail sales and distribution management application.
E-sale Manager
Flutter InternPrivate enterprise application for retail sales operations and employee activity management.
- Implemented assigned mobile features from business requirements and UI specifications.
- Built and maintained retail location tracking, store visit monitoring, check-in, attendance, sales performance, leave request, and approval features.
- Learned team workflow, code review habits, and enterprise app constraints while contributing as an intern.
Flutter Intern
Key Responsibilities & Highlights
- Supported the development of mobile features and UI for the Digi-Touch application under senior developer guidance.
- Adopted team development workflows, Git version control practices, and coding standards within a professional environment.
Digi-Touch
Flutter InternBusiness card management application for storing customer/partner details and sharing contacts via QR code.
- Built and maintained digital business card storage and contact organization features.
- Implemented QR code generation and scanning workflows for quick contact exchange.
Vetted Stack & Tooling
Projects & Engineering Solutions
English From Zero
Comprehensive self-learning English platform structured across a 6-month roadmap (180 lessons). Architected with Local-First Dexie IndexedDB, integrating Gemini AI Coach & Practice Arena, Flashcard SRS, selection lookup, and WebRTC P2P sync for offline data durability.
FastDrop
Real-time peer-to-peer file and encrypted text transfer web app powered by WebRTC DataChannel. Features zero-knowledge AES-256-GCM end-to-end encryption, memory backpressure flow control, and Web Worker multithreading.
Farmext
Commercial aquaculture ecosystem deployed to Apple App Store & Google Play. Architected the complete Eshop supply chain flow, community feeds, inventory management, and co-developed the water testing Lab Management module.
Safety Document Management App
Enterprise mobile application digitizing workplace safety workflows: custom camera Document Scanner with guided capture UX, Dio Interceptor with automatic token refresh & request queue replay, OAuth/Cognito security, and strict Clean Architecture.
Health App
B2B clinic health telemetry and patient record platform: Clean Architecture, BLoC/Cubit, fl_chart statistical visualization, integrated medical instructional video player, Shimmer loading states, and multi-language ARB support.
SnapOrigin
High-throughput image metadata extraction and management application: ultra-fast local schema with ObjectBox database, historical timestamps, and on-device copyright watermark stamping engine.
Online Tools & Utilities
Software engineering that works as hard as your business.
Single Point of Accountability
No endless vendor handoffs or blame-shifting. One dedicated engineer owns the mobile application from architecture to App Store release.
Full-Stack Traceability
Transparent Git history, clean PR reviews, structured commits, and detailed release documentation so your team is always in full control.
Zero-Leak Code Quality
Immutable states powered by Freezed, strict lint rules, and memory profiling to prevent resource leaks and guarantee 99.9% crash-free uptime.
Predictable Velocity & Milestones
Accurate estimations, proactive communication on potential blockers, and milestone-driven delivery with zero hidden overhead.
Rapid Incident Resolution
When edge cases emerge, I don't point fingers — I diagnose, reproduce, patch, and deploy hotfixes immediately to safeguard user experience.
F.A.Q
Straightforward engineering answers, so you can move forward with confidence.
Ready to build something exceptional?
No agency overhead. No handoff communication barriers. Direct access to a dedicated mobile engineer ready to ship your vision.